However, the toxicology report adds that "Cocaine and metabolites were identified and were contributory to the death. Marijuana, Alprazolam (Xanax), Cyclobenzaprine (Flexeril) and Diphenhydramine (Benadryl) were identified but did not contribute to the death."

An autopsy was conducted the day after she died. Capt. John Kades of the Los Angeles County coroner's office said at the time there no indications of foul play and no obvious signs of trauma on Houston's body. Prescription pill bottles were found in her room, but the number of pills were "not in alarming amounts," said officials.